Description

Dowex(R) 1X8 is a strongly basic anion exchange resin supplied in the chloride form. This product is essential for the selective removal and recovery of anionic species from aqueous and non-aqueous solutions across various industrial processes. It is particularly valued in applications requiring high capacity and consistent performance. Key industries that rely on this resin include water treatment, pharmaceuticals, chemical synthesis, and hydrometallurgy.

Application

• Water Purification & Demineralization: For the removal of anions such as nitrate, sulfate, and chloride to produce high-purity deionized water.
• Pharmaceutical Purification: Used in the isolation and purification of active pharmaceutical ingredients (APIs) and in the preparation of purified water for injection (WFI).
• Chemical Catalysis & Synthesis: Acts as a catalyst or reagent support in organic synthesis reactions.
• Metal Recovery (Hydrometallurgy): For the selective adsorption and concentration of precious metals like gold or platinum from process streams.
• Sugar & Sweetener Decolorization: Employed in the refining process to remove color bodies and organic acids.
• Nuclear Industry: Treatment of low-level radioactive waste streams for anion removal.
• Laboratory & Analytical Chemistry: Used in chromatography columns for ion analysis and sample preparation.

Basic Information

Product Name	Dowex(R) 1X8
CAS No.	69772-06-1
Molecular Formula	(C8H8·C2H3Cl·C7H7N)n
Molecular Weight	N/A (Polymeric resin)
Synonyms	Dowex 1-X8; Amberlite IRA-400 (Cl form); Strongly Basic Anion Exchange Resin Type I; Polystyrene quaternary ammonium anion exchanger; Anion exchange resin (chloride form); Styrene-DVB anion resin; Gel type anion exchange resin; IRA-400 Cl
EINECS	Contact for details

Quality Control

Our Dowex(R) 1X8 resin is manufactured under a strict quality management system. Each batch is tested to ensure it meets critical performance parameters such as total exchange capacity, moisture content, and particle size distribution. A Certificate of Analysis (COA) documenting these specifications is provided with every shipment to guarantee consistency and reliability for your processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). The resin is supplied moist; avoid freezing and prolonged exposure to temperatures above 40°C to prevent damage to the polymeric matrix. Keep away from strong oxidizing agents.

Specification

Item	Specification
Matrix	Styrene-Divinylbenzene (gel type)
Functional Group	Quaternary Ammonium (Type I)
Ionic Form (as shipped)	Chloride (Cl⁻)
Total Exchange Capacity	≥ 1.2 meq/mL (min)
Moisture Holding Capacity	40 - 50 %
Particle Size Range	0.3 - 1.2 mm (16 - 50 mesh, U.S. Std.)
Uniformity Coefficient	≤ 1.7
Reversible Swelling (Cl⁻ → OH⁻)	~ 20 %
Maximum Operating Temperature	60 °C (OH⁻ form), 100 °C (Cl⁻ form)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.